Systems and methods for changing an end effector are provided. A connecting plate may have a first side, a second side opposite the first side, and a kinematic interface. The kinematic interface may include at least one projection extending from both the first side and the second side. A robot flange may have a first kinematic receiver including at least one recess for receiving a corresponding projection of the at least one projection of the first side. An end effector may have a second kinematic receiver and a locking assembly. The second kinematic receiver may include at least one recess for receiving a corresponding projection of the at least one projection of the second side. The locking assembly may be configured to releasably secure the end effector to the robot flange.

A member replacement device includes: an operational member (9) which is rotatably accommodated in a recess (8) formed in a base-end-side end face of a output rod (5), the operational member (9) being configured to press and move the output rod (5) toward the leading end side in the axial direction; and a biasing member (10) which is provided inside the cylindrical hole (6, 7) or with which the cylindrical hole (6, 7) is filled, the biasing member (10) being configured to press and move the output rod (5) toward the base end side in the axial direction. The operational member (9) is pressed and moved by a cam surface (25a) of a cam rod (24) inserted into a guide hole (23).

Tool coupling device with two coupling subdevices, wherein one of the coupling subdevices is intended for the distal end of a robot arm, and the other coupling subdevice is intended to be provided on a tool which can be coupled to the robot arm. The coupling subdevices are uncouplable from and to each other for the purpose of tool changing. A first of the coupling subdevices has a coupling socket extending in a coupling direction for insertion into a coupling recess of a second coupling subdevice. A plurality of ball channels are provided, within each of which a ball body is arranged as a locking body. The ball bodies are movable between a radially extended coupling position and a radially retracted release position. An actuating body for securing the ball bodies in the extended position is displaceable by an electric motor or a manual control lever.

A clamping system having first and second clamping mechanisms with respective contact faces, that are couplable such that the contact faces press together with a coupling force. The first clamping mechanism has first and second elements and at least three clamping spheres, the first and second elements being twistable relative to one another, and the clamping spheres being mounted on fixed positions of the second element to be rollable along a circular line. The second clamping mechanism has groove guides assigned to the clamping spheres which have helical groove courses in clamping portions. When coupling the clamping mechanisms, by twisting the second element relative to the first, first regions of the clamping spheres are moved to a clamping position which presses the contact faces together via coupling force. When coupling, the clamping spheres in the clamping portions roll over large distances, leading to low wear and activation with reduced force.